Cwu geologist karl lillquist helped establish that the bones were deposited on top of creek gravel and then buried by a mudslide 不同的正在对这些猛犸象骨骼进行放射性碳测定，以更加精确地得知这些化石的年龄。
The initial stone circle at stonehenge ? the so - called sarsen stones ? has been radiocarbon - dated to between 2600 and 2500 b . c 对巨石阵中的石材（就是所谓的砂岩石）进行放射性碳测定，日期在公元前2600年到公元前2500年之间。
Standard test methods for determining the biobased content of natural range materials using radiocarbon and isotope ratio mass spectrometry analysis 使用放射性碳和同位素比率质谱分析法测定天然材料中生物基含量的标准试验方法
The technique is so sensitive that it can detect a single radioactive carbon atom hiding among a quadrillion ( one million billion ) ordinary ones 这项技术非常敏感，甚至能够在十的十五次方（一千万亿）个普通碳原子中找到一个放射性碳原子。
The portion of the shroud used for the radiocarbon dating was from a corner , which would have been handled often , increasing the likelihood of contamination 来自裹尸布一角的部分用作放射性碳年代测定，通常是经过处理的增加了被污染的可能性。
If the coating is of a great enough thickness , according to gove , it would make the fabric sample seem younger than it should be to the radiocarbon method 依照哈里所说： “如果覆盖物有足够的厚度，那么放射性碳测定法会得出比预期年代要晚的结果。 ”
The ancestors of modern man moved into and across europe , ousting the neanderthals , faster than previously thought , a new analysis of radiocarbon data shows 用放射性碳测定年代的一项最新数据显示，现代人祖先进入欧洲并逐渐取代尼安德特人的过程要比传统理论认为的更快。
" it was an act of rebellion against the huaris . without doubt , this gives us valuable information about ancient inhabitants of what is now peru ' s capital , " she added 目前，专家正在对这具古老的木乃伊做进一步研究，不久之后它将被送到利马接受放射性碳测试，以确定它的实际年份。
Food grains , scraps of cloth , bits of wood and so on can thus be dated by finding out how much radioactive carbon is left in them : the less there is , the older they are 食用的谷物、衣物的脱屑、少量木屑等等都可以通过计算放射性碳含量而得知他们距今有多久：含量越少，年代越久远。
Using radiocarbon techniques on sediments collected from four rivers , they determined that bacteria may alter riverine carbon , making it indistinguishable from ocean carbon 科学家以放射性碳技术研究收集自四条河流的沉积层，发现细菌可以改变河水里的碳，使它与海水里的碳无法区别。
